From: Max Reitz <mreitz@redhat.com>
To: Alberto Garcia <berto@igalia.com>, qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, Nir Soffer <nsoffer@redhat.com>,
qemu-block@nongnu.org
Subject: Re: [PATCH v2 1/4] qcow2: Require that the virtual size is a multiple of the sector size
Date: Tue, 14 Jan 2020 14:47:53 +0100 [thread overview]
Message-ID: <9f7ab60c-c9d4-527b-55dd-40f487a36895@redhat.com> (raw)
In-Reply-To: <w51v9peb2dz.fsf@maestria.local.igalia.com>
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On 14.01.20 14:20, Alberto Garcia wrote:
> On Tue 14 Jan 2020 02:01:03 PM CET, Max Reitz wrote:
>>> However when an image is opened the virtual size is rounded down,
>>> which means that trying to access the last few advertised bytes will
>>> result in an error. As seen above QEMU cannot create such images and
>>> there's no good use case that would require us to try to handle them
>>> so let's just treat them as unsupported.
>>
>> But isn’t that just a bug in qemu?
>
> Yes, but does it make sense to try to support images with unaligned
> sizes if no one is going to create them ever and QEMU cannot even
> generate them?
If nobody uses such images ever, isn’t the current code fine as-is?
Max
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next prev parent reply other threads:[~2020-01-14 13:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-09 19:12 [PATCH v2 0/4] qcow2: Misc BDRV_SECTOR_SIZE updates Alberto Garcia
2020-01-09 19:12 ` [PATCH v2 1/4] qcow2: Require that the virtual size is a multiple of the sector size Alberto Garcia
2020-01-14 13:01 ` Max Reitz
2020-01-14 13:20 ` Alberto Garcia
2020-01-14 13:47 ` Max Reitz [this message]
2020-01-14 13:58 ` Alberto Garcia
2020-01-14 14:03 ` Max Reitz
2020-01-16 14:24 ` Alberto Garcia
2020-01-09 19:13 ` [PATCH v2 2/4] qcow2: Don't round the L1 table allocation up to " Alberto Garcia
2020-01-14 13:46 ` Max Reitz
2020-01-09 19:13 ` [PATCH v2 3/4] qcow2: Tighten cluster_offset alignment assertions Alberto Garcia
2020-01-10 12:14 ` Alberto Garcia
2020-01-14 13:58 ` Max Reitz
2020-01-14 13:56 ` Max Reitz
2020-01-09 19:13 ` [PATCH v2 4/4] qcow2: Use BDRV_SECTOR_SIZE instead of the hardcoded value Alberto Garcia
2020-01-14 14:15 ` Max Reitz
2020-01-16 23:26 ` Alberto Garcia
2020-01-17 9:12 ` Max Reitz
2020-01-17 9:55 ` Kevin Wolf
2020-01-17 11:01 ` Max Reitz
2020-01-17 11:51 ` Kevin Wolf
2020-01-17 14:34 ` Alberto Garcia
2020-01-18 18:07 ` Alberto Garcia
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